US20120329565A1 - Cage for Ball Joint and Ball Joint - Google Patents
Cage for Ball Joint and Ball Joint Download PDFInfo
- Publication number
- US20120329565A1 US20120329565A1 US13/601,268 US201213601268A US2012329565A1 US 20120329565 A1 US20120329565 A1 US 20120329565A1 US 201213601268 A US201213601268 A US 201213601268A US 2012329565 A1 US2012329565 A1 US 2012329565A1
- Authority
- US
- United States
- Prior art keywords
- cage
- window
- webs
- longitudinal axis
- ball joint
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
- F16D3/16—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts
- F16D3/20—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members
- F16D3/22—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members the rolling members being balls, rollers, or the like, guided in grooves or sockets in both coupling parts
- F16D3/223—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members the rolling members being balls, rollers, or the like, guided in grooves or sockets in both coupling parts the rolling members being guided in grooves in both coupling parts
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
- F16D3/16—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts
- F16D3/20—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members
- F16D3/22—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members the rolling members being balls, rollers, or the like, guided in grooves or sockets in both coupling parts
- F16D3/223—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members the rolling members being balls, rollers, or the like, guided in grooves or sockets in both coupling parts the rolling members being guided in grooves in both coupling parts
- F16D2003/22303—Details of ball cages
Definitions
- the invention relates to a cage for a ball joint, the cage being configured essentially annular about a longitudinal axis, said cage having an inner surface and an outer surface, two edges delimiting the inner surface and the outer surface, and at least one window, wherein the inner surface surrounds an inner space of the cage and two webs laterally adjoin the at least one window.
- the invention also relates to a ball joint.
- Ball joints are used, for example, in drive trains of vehicles in order to transmit the torque of the engine to a wheel axle.
- the balls serve for force or torque transmission between an outer hub and an inner hub of the joint and a cage having windows holds the balls in a plane in order to permit bending of the joint.
- a problem of the prior art cages lies in the fact that the balls press against the borders of the windows and that, due to the high torques and relative movements or sliding movements of the balls and the high temperatures resulting therefrom, damage can be caused to the cages, particularly in the region of the window support surfaces.
- a solution belonging to the prior art consists in increasing the wall thicknesses of the windows. This is undertaken selectively, only in the region of the windows, in order not to increase the weight of the cages unnecessarily.
- the associated production method is complex and costly. In particular, it is mostly metal-removing methods that must be used which, due to the interrupted structures of the material, further reduce the strength of the cage.
- At least one side of the at least one window is situated more remotely from or nearer to the longitudinal axis than a web by a particular offset.
- the window is therefore made from part of each edge and the two webs. If a plurality of windows is present, the webs are each preferably arranged between two windows.
- the offset is preferably generated by forming techniques, i.e. not by metal removal.
- One embodiment of the cage according to the invention provides that the at least one section of at least one edge at the height of the at least one window in relation to the longitudinal axis is arranged closer to the longitudinal axis than the at least one of the two webs. In this embodiment, the edge is pressed in toward the longitudinal axis.
- Another embodiment of the cage according to the invention is characterized in that at least one of the edges forms a ball running surface at the height of the at least one window, and that the ball running surface and the at least one of the two webs have essentially the same wall thickness.
- the ball running surface is preferably arranged symmetrically about the central plane of the window and lies essentially within the offset of the edge relative to the web.
- the ball running surface that is, the part of the offset edge which, in the mounted joint, forms the stop for the balls, has the same wall thickness as the web or as the two webs adjacent to the window and surrounding the window.
- the wall thickness which is essentially the same, is produced by the deformation of the edge toward the longitudinal or joint axis, for example, by means of the forming techniques.
- Another embodiment of the cage according to the invention provides that the cage has a greater wall thickness at least in the region of the offset, than in the region of the webs.
- each edge has at least one section having an offset relative to the longitudinal axis in relation to at least one of the two webs.
- the window is, for example, symmetrically enclosed, wherein the edges have an outward elevation or an inward depression, for example, in the central region of the window.
- Another embodiment of the cage according to the invention provides that the outer surface is configured at least partially spherical.
- the invention also relates to a ball joint having at least one cage corresponding to one of the above embodiments.
- FIG. 1 is a perspective representation of a cage according to the invention
- FIG. 2 is a section through the cage of FIG. 1 .
- FIG. 3 is a section through a ball joint comprising the cage according to the invention.
- FIG. 1 shows a cage 1 according to the invention which is configured circularly about a longitudinal axis 8 .
- the outer surface 3 and the inner surface 2 surround an inner space 7 .
- Windows 6 are provided which are surrounded by the edges 4 , 5 and the webs 9 and which accommodate the balls when the ball joint is assembled. It is apparent that the edges 4 , 5 offer a larger accommodating surface for the balls at the height of the windows 6 than in the region of the webs 9 .
- the sectional view in FIG. 2 shows the offset in the edge 4 relative to the webs 9 toward the inner space 7 .
- a possible production method is, for example, the following:
- the cage windows 6 are initially stamped out.
- the central regions of the windows 6 are deformed radially inwardly, primarily over the whole cage height, such that the support surface is inwardly displaced throughout the material thickness.
- the sequence of stamping out the window and forming the central regions cannot be reversed.
- the outer sphere is produced as a guide surface in the joint outer part or the joint outer hub, for example, by metal removal.
- the guide surfaces are completely formed in the required region, that is, on both sides of the running paths of the joint outer part.
- the cage according to the invention is used in an opposed path joint with external cage centering.
- the contact surfaces of the inner running paths can be configured larger, so that the transmission capacity of the joint is increased.
- a profiled mandril is placed in the bore as the support element. Any unevenness in the end faces of the cage which may occur due to uneven material displacement is not critical for function in some uses or such unevenness may be remedied by means of a simple turning process.
- FIG. 3 shows a joint with a cage 1 according to the invention.
- the section is so arranged as to pass through a portion of the cage 1 having a ball 13 and a portion without a ball, that is, at the height of a web 9 .
- the inner hub 11 and the outer hub 12 each have grooves or paths for the balls 13 which transmit the torque between the two hubs 11 , 12 of the joint.
- the balls 13 are held by the cage 1 in one plane, so that jamming following a bending movement of the joint is prevented.
Abstract
Description
- This application is a continuation of international patent application no. PCT/DE2011/000201, filed Feb. 26, 2011 designating the United States of America, and published in German on Sep. 15, 2011 as WO 2011/110155, the entire disclosure of which is incorporated herein by reference. Priority is claimed based on Federal Republic of Germany patent application no. DE 10 2010 010 487.6, filed Mar. 6, 2010, the entire disclosure of which is likewise incorporated herein by reference.
- The invention relates to a cage for a ball joint, the cage being configured essentially annular about a longitudinal axis, said cage having an inner surface and an outer surface, two edges delimiting the inner surface and the outer surface, and at least one window, wherein the inner surface surrounds an inner space of the cage and two webs laterally adjoin the at least one window. The invention also relates to a ball joint.
- Ball joints are used, for example, in drive trains of vehicles in order to transmit the torque of the engine to a wheel axle. The balls serve for force or torque transmission between an outer hub and an inner hub of the joint and a cage having windows holds the balls in a plane in order to permit bending of the joint.
- Various embodiments of ball cages are known from the prior art. German unexamined application no.
DE 1 202 588 discloses a sprung cage, the windows of which are each provided with a slit. A cage with windows of different lengths is described in U.S. Pat. No. 7,393,284 (=DE 103 04 156). A cage with windows, the sides of which have a pointed shape, is disclosed in German patent no. DE 43 29 769 C1. German patent no. DE 28 16 255 discloses a cage, the outer surface of which has a bevel which extends from the edge of the cage to a longitudinal side of a window. Mounting enlargements are provided between the windows of the cage disclosed in published Australian patent application no. AU 2002-352039 A1 (=WO 03/046397). U.S. Pat. No. 6,461,244 (=DE 102 01 169) discloses a cage which has a groove for reducing the periphery of the cage provided between two windows. A cage, the windows of which each accommodate two balls adjoining one another, is disclosed in U.S. Pat. No. 7,648,418 (=DE 103 37 918). US patent publication No. U.S. 2007/0298167 (=DE 10 2006 020 711) discloses a cage which is configured such that lateral edges of the windows have a greater wall thickness than the remainder of the cage. U.S. Pat. No. 6,241,615 (=DE 198 31 011) discloses a cage, the windows of which have reinforcing projections. U.S. Pat. No. 4,846,764 (=DE 38 30 579) describes a cage produced from two half cages made of sheet metal. - A problem of the prior art cages lies in the fact that the balls press against the borders of the windows and that, due to the high torques and relative movements or sliding movements of the balls and the high temperatures resulting therefrom, damage can be caused to the cages, particularly in the region of the window support surfaces. A solution belonging to the prior art consists in increasing the wall thicknesses of the windows. This is undertaken selectively, only in the region of the windows, in order not to increase the weight of the cages unnecessarily. However, the associated production method is complex and costly. In particular, it is mostly metal-removing methods that must be used which, due to the interrupted structures of the material, further reduce the strength of the cage.
- It is therefore an object of the invention to provide a cage for a ball joint which provides good support for the balls and yet is economical to manufacture.
- This and other objects are achieved in accordance with the present invention by providing a cage in which at least one section of at least one edge has an offset relative to the longitudinal axis in relation to at least one of the two webs at the height of the at least one window.
- According to the invention, therefore, at least one side of the at least one window is situated more remotely from or nearer to the longitudinal axis than a web by a particular offset. The window is therefore made from part of each edge and the two webs. If a plurality of windows is present, the webs are each preferably arranged between two windows. The offset is preferably generated by forming techniques, i.e. not by metal removal.
- One embodiment of the cage according to the invention provides that the at least one section of at least one edge at the height of the at least one window in relation to the longitudinal axis is arranged closer to the longitudinal axis than the at least one of the two webs. In this embodiment, the edge is pressed in toward the longitudinal axis.
- Another embodiment of the cage according to the invention is characterized in that at least one of the edges forms a ball running surface at the height of the at least one window, and that the ball running surface and the at least one of the two webs have essentially the same wall thickness. The ball running surface is preferably arranged symmetrically about the central plane of the window and lies essentially within the offset of the edge relative to the web. In this embodiment the ball running surface, that is, the part of the offset edge which, in the mounted joint, forms the stop for the balls, has the same wall thickness as the web or as the two webs adjacent to the window and surrounding the window. The wall thickness, which is essentially the same, is produced by the deformation of the edge toward the longitudinal or joint axis, for example, by means of the forming techniques.
- Another embodiment of the cage according to the invention provides that the cage has a greater wall thickness at least in the region of the offset, than in the region of the webs.
- Another embodiment of the cage according to the invention provides that each edge has at least one section having an offset relative to the longitudinal axis in relation to at least one of the two webs. According to this embodiment, the window is, for example, symmetrically enclosed, wherein the edges have an outward elevation or an inward depression, for example, in the central region of the window.
- Another embodiment of the cage according to the invention provides that the outer surface is configured at least partially spherical.
- The invention also relates to a ball joint having at least one cage corresponding to one of the above embodiments.
- The invention will be described in further detail hereinafter with reference to illustrative embodiments shown in the accompanying drawing figures, in which:
-
FIG. 1 is a perspective representation of a cage according to the invention; -
FIG. 2 is a section through the cage ofFIG. 1 , and -
FIG. 3 is a section through a ball joint comprising the cage according to the invention. -
FIG. 1 shows acage 1 according to the invention which is configured circularly about alongitudinal axis 8. Theouter surface 3 and theinner surface 2 surround aninner space 7.Windows 6 are provided which are surrounded by theedges webs 9 and which accommodate the balls when the ball joint is assembled. It is apparent that theedges windows 6 than in the region of thewebs 9. - The sectional view in
FIG. 2 shows the offset in theedge 4 relative to thewebs 9 toward theinner space 7. - A possible production method is, for example, the following: In a ring produced by any method, the
cage windows 6 are initially stamped out. Subsequently, the central regions of thewindows 6 are deformed radially inwardly, primarily over the whole cage height, such that the support surface is inwardly displaced throughout the material thickness. However, the sequence of stamping out the window and forming the central regions cannot be reversed. Thereafter, the outer sphere is produced as a guide surface in the joint outer part or the joint outer hub, for example, by metal removal. The guide surfaces are completely formed in the required region, that is, on both sides of the running paths of the joint outer part. Preferably, the cage according to the invention is used in an opposed path joint with external cage centering. One advantage lies in the economical production method for such cages with inward window reinforcement. In addition, the contact surfaces of the inner running paths can be configured larger, so that the transmission capacity of the joint is increased. Alternatively, it is possible to form the sphere surfaces by means of a stamping or rolling process, that is, without cutting. Preferably, a profiled mandril is placed in the bore as the support element. Any unevenness in the end faces of the cage which may occur due to uneven material displacement is not critical for function in some uses or such unevenness may be remedied by means of a simple turning process. -
FIG. 3 shows a joint with acage 1 according to the invention. The section is so arranged as to pass through a portion of thecage 1 having aball 13 and a portion without a ball, that is, at the height of aweb 9. Theinner hub 11 and theouter hub 12 each have grooves or paths for theballs 13 which transmit the torque between the twohubs balls 13 are held by thecage 1 in one plane, so that jamming following a bending movement of the joint is prevented. - The foregoing description and examples have been set forth merely to illustrate the invention and are not intended to be limiting. Since modifications of the described embodiments incorporating the spirit and substance of the invention may occur to persons skilled in the art, the invention should be construred broadly to include all variations within the scope of the appended claims and equivalents thereof.
Claims (7)
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102010010487 | 2010-03-06 | ||
DE102010010487.6A DE102010010487B4 (en) | 2010-03-06 | 2010-03-06 | Cage for ball joint and ball joint |
DE102010010487.6 | 2010-03-06 | ||
PCT/DE2011/000201 WO2011110155A1 (en) | 2010-03-06 | 2011-02-26 | Cage for ball joint and ball joint |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2011/000201 Continuation WO2011110155A1 (en) | 2010-03-06 | 2011-02-26 | Cage for ball joint and ball joint |
Publications (2)
Publication Number | Publication Date |
---|---|
US20120329565A1 true US20120329565A1 (en) | 2012-12-27 |
US8419554B2 US8419554B2 (en) | 2013-04-16 |
Family
ID=44080496
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US13/601,268 Active US8419554B2 (en) | 2010-03-06 | 2012-08-31 | Cage for ball joint and ball joint |
Country Status (4)
Country | Link |
---|---|
US (1) | US8419554B2 (en) |
CN (1) | CN102792042A (en) |
DE (1) | DE102010010487B4 (en) |
WO (1) | WO2011110155A1 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102011014628B4 (en) | 2011-03-21 | 2022-02-17 | Neumayer Tekfor Engineering Gmbh | Cage for ball joint and ball joint |
US20130072312A1 (en) * | 2011-09-16 | 2013-03-21 | Hans Wormsbaecher | High Angle Plunge Joint |
DE102016113139A1 (en) * | 2016-07-15 | 2018-01-18 | Gkn Driveline Deutschland Gmbh | Method for producing a cage for a ball-and-cage joint |
Family Cites Families (26)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1202588B (en) | 1963-03-15 | 1965-10-07 | Loehr & Bromkamp Gmbh | Ball cage of a constant velocity swivel joint |
FR1446417A (en) * | 1965-06-09 | 1966-07-22 | Glaenzer Spicer Sa | Constant-velocity universal joint, wide working angle, fixed or sliding |
US3815381A (en) * | 1972-07-12 | 1974-06-11 | Gen Motors Corp | Constant velocity universal joint gage |
DE2816255A1 (en) | 1978-04-14 | 1979-10-25 | Ortopedia Gmbh | Patient lifting stretcher - has underframe inserted under free-standing bath and inverted U=shaped support bracket |
DE2816155C2 (en) | 1978-04-14 | 1980-05-29 | Loehr & Bromkamp Gmbh, 6050 Offenbach | Cage for the balls of a constant velocity swivel |
US4846764A (en) | 1987-09-14 | 1989-07-11 | Gkn Automotive Components, Inc. | Constant velocity joint cage and method for making same |
JPH01250619A (en) * | 1988-03-30 | 1989-10-05 | Ntn Corp | Equi-velocity joint |
DE3819528C1 (en) * | 1988-06-08 | 1989-10-05 | Loehr & Bromkamp Gmbh, 6050 Offenbach, De | |
DE4329769C1 (en) | 1993-09-03 | 1995-01-05 | Gkn Automotive Ag | Cage for a homokinetic joint |
US5404642A (en) * | 1994-01-31 | 1995-04-11 | The Torrington Company | Method of assembling a bearing |
DE19648537C1 (en) * | 1996-11-25 | 1998-07-30 | Loehr & Bromkamp Gmbh | CV shaft |
EP0952364B2 (en) * | 1997-12-06 | 2005-11-02 | Iprotec Maschinen- und Edelstahlprodukte GmbH | Method for finishing cages in universal joints |
DE19831011C1 (en) | 1998-07-10 | 2000-03-16 | Gkn Loebro Gmbh | Fixed constant velocity joint with an axially mountable cage |
US6461244B2 (en) | 2000-02-18 | 2002-10-08 | Gkn Automotive, Inc. | Constant velocity fixed joint with improved cage assembly |
DE10148297B4 (en) * | 2001-09-29 | 2008-03-27 | Gkn Driveline Deutschland Gmbh | Ball constant velocity joint |
WO2003046397A1 (en) | 2001-11-29 | 2003-06-05 | Gkn Automotive Gmbh | Ball cage for ball constant velocity revolute joints that are to be axially installed |
DE10201168A1 (en) | 2002-01-15 | 2003-08-14 | Ruediger Ufermann | Ignition device for an optimum combustion process in a lean-mix engine has jet-controlled direct fuel injection with an ignition and heating device for internal combustion engine |
DE10304156B4 (en) | 2003-02-03 | 2011-10-20 | Gkn Driveline International Gmbh | Anti-ball joint with improved cage |
DE10337918B4 (en) | 2003-08-18 | 2010-01-07 | Gkn Driveline Deutschland Gmbh | Twin ball joint with improved ball cage |
DE10337919B4 (en) * | 2003-08-18 | 2008-01-24 | Gkn Driveline International Gmbh | Counter track joint with improved ball cage |
US20050101391A1 (en) * | 2003-11-10 | 2005-05-12 | Ingalsbe Steven L. | Constant velocity joint having friction reducing web locators |
JP2006258170A (en) * | 2005-03-16 | 2006-09-28 | Ntn Corp | Fixed type constant velocity universal joint |
ITMI20061838A1 (en) * | 2005-10-05 | 2007-04-06 | Shaft Form Engineering Gmbh | HOMOCINETIC BALL JOINT |
DE102006020711A1 (en) * | 2006-05-04 | 2007-11-15 | Gkn Driveline Deutschland Gmbh | Ball cage for a constant velocity universal joint and method for producing a ball cage |
US20070298167A1 (en) | 2006-06-26 | 2007-12-27 | Applied Materials, Inc. | Ozone abatement in a re-circulating cooling system |
JP2010043668A (en) * | 2008-08-11 | 2010-02-25 | Ntn Corp | Constant speed universal joint and manufacturing method therefor |
-
2010
- 2010-03-06 DE DE102010010487.6A patent/DE102010010487B4/en active Active
-
2011
- 2011-02-26 WO PCT/DE2011/000201 patent/WO2011110155A1/en active Application Filing
- 2011-02-26 CN CN2011800127168A patent/CN102792042A/en active Pending
-
2012
- 2012-08-31 US US13/601,268 patent/US8419554B2/en active Active
Also Published As
Publication number | Publication date |
---|---|
DE102010010487B4 (en) | 2022-01-13 |
CN102792042A (en) | 2012-11-21 |
US8419554B2 (en) | 2013-04-16 |
DE102010010487A1 (en) | 2011-09-08 |
WO2011110155A1 (en) | 2011-09-15 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US8511903B2 (en) | Wheel bearing device and manufacturing method therefor | |
US20070116395A1 (en) | Ball bearing | |
EP2514605B1 (en) | Machining tool for vehicle hub unit and vehicle hub unit | |
EP2565051B1 (en) | Wheel supporting device | |
US8419554B2 (en) | Cage for ball joint and ball joint | |
US8337111B2 (en) | Axial retention assembly | |
US7396283B2 (en) | Needle roller retainer for tripot joint | |
JP2019520535A (en) | Method of manufacturing cage for constant velocity ball joint | |
EP1394430B2 (en) | Cross coupling | |
WO2010147135A1 (en) | Wheel bearing | |
US7008325B2 (en) | Retainer ring for tripod constant velocity joints | |
KR101414546B1 (en) | Rolling bearing for a shaft | |
CN110345170B (en) | Constant velocity joint | |
US20130095932A1 (en) | Constant-velocity ball joint | |
JP4681235B2 (en) | Constant velocity joint | |
EP2105322B1 (en) | Wheel bearing assembly, manufacturing method therefor, and calk jig | |
JP5834968B2 (en) | Cross shaft type universal joint | |
EP3546779B1 (en) | Tripod constant-velocity joint | |
EP2609343B1 (en) | Fixed type constant velocity joint | |
WO2021060489A1 (en) | Rolling bearing | |
JP6769234B2 (en) | Double row rolling bearing unit for wheel support | |
EP2133582B1 (en) | Constant velocity universal joint | |
US8262487B2 (en) | Ball joint | |
EP3045754B1 (en) | Constant-velocity universal joint | |
JP4278693B2 (en) | Rolling bearing unit |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: NEUMAYER TEKFOR HOLDING GMBH, GERMANY Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:SZENTMIHALYI, VOLKER;SCHMIDBAUER, ARNE;SIGNING DATES FROM 20120813 TO 20120815;REEL/FRAME:029264/0331 |
|
STCF | Information on status: patent grant |
Free format text: PATENTED CASE |
|
FPAY | Fee payment |
Year of fee payment: 4 |
|
AS | Assignment |
Owner name: NEUMAYER TEKFOR ENGINEERING GMBH, GERMANY Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:NEUMAYER TEKFOR HOLDING GMBH;REEL/FRAME:048709/0675 Effective date: 20190212 |
|
MAFP | Maintenance fee payment |
Free format text: PAYMENT OF MAINTENANCE FEE, 8TH YEAR, LARGE ENTITY (ORIGINAL EVENT CODE: M1552); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY Year of fee payment: 8 |